w83194br-138 Winbond Electronics Corp America, w83194br-138 Datasheet

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w83194br-138

Manufacturer Part Number
w83194br-138
Description
200mhz Clock For Solano Chipset
Manufacturer
Winbond Electronics Corp America
Datasheet
1.0 GENERAL DESCRIPTION
The W83194BR-138 is a Clock Synthesizer for Intel 815 Solano chipset. W83194BR-138 provides all
clocks required for high-speed RISC or CISC microprocessor and also provides 64 different
frequencies of CPU, SDRAM, PCI, 3V66, IOAPIC clocks frequency setting. All clocks are externally
selectable with smooth transitions.
The W83194BR-138 provides I
each clock outputs and provides 0.25% and 0.5% center type spread spectrum to reduce EMI.
The W83194BR-138 provides stepless frequency programming by controlling the VCO freq. and the
clock output divisor ratio. Also the skew of CPU, SDRAM and 3V66 clock outputs are programmable.
A watch dog timer is quipped and when time out, the RESET# pin will output 4ms pulse signal.
High drive PCI and SDRAM CLOCK outputs typically provide greater than 1 V /ns slew rate into 30
pF loads. CPU CLOCK outputs typically provide better than 1 V /ns slew rate into 20 pF loads as
maintaining 50± 5% duty cycle. The fixed frequency outputs as REF, 24MHz, and 48 MHz provide
better than 0.5V /ns slew rate.
2.0PRODUCT FEATURES
The W83194BR-138 accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply.
2 CPU clocks
3 3V66 clocks
9 SDRAM clocks for 2 DIMMs
8 PCI synchronous clocks.
Optional single or mixed supply:
(VDDR = VDDP=VDDS = VDD48 = VDD3 = 3.3V, VDDA=VDDC=2.5V)
I
0.25% or 0.5% center type spread spectrum
Programmable registers to enable/stop each output and select modes
(mode as Tri-state or Normal )
48 MHz for USB
24 MHz for super I/O
Packaged in 48-pin SSOP
Skew form CPU to PCI clock -1 to 4 ns, center 2.6 ns
Smooth frequency switch with selections from 66.8 to 200MHz
2
C 2-Wire serial interface and I
2
C serial bus interface to program the registers to enable or disable
2
C read back
- 1 -
200MHZ CLOCK FOR SOLANO CHIPSET
Publication Release Date: May 2000
W83194BR-138
Revision 0.37

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w83194br-138 Summary of contents

Page 1

... A watch dog timer is quipped and when time out, the RESET# pin will output 4ms pulse signal. The W83194BR-138 accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply. High drive PCI and SDRAM CLOCK outputs typically provide greater than 1 V /ns slew rate into 30 pF loads. CPU CLOCK outputs typically provide better than 1 V /ns slew rate into 20 pF loads as maintaining 50± ...

Page 2

... SDRAM SDRAM VDDS 12 37 SDRAM SDRAM SDRAM VSS 16 33 SDRAM SDRAM SDRAM_F 19 30 VDDS 20 29 VSS 21 24_48MHz/ FS2& 48MHz-1/FS3 48MHz-0/ FS4 VDD48 25 Publication Release Date: May 2000 - 2 - W83194BR-138 PRELIMINARY Revision 0.37 ...

Page 3

... PCI clocks(Default=0). I/O Low skew (< 250ps) PCI clock outputs. Latched input for Mode1* pin at initial power up for the output PD#/RESET# output selection. OUT Low skew (< 250ps) PCI clock outputs. OUT 3.3V output clocks for the chipset. Publication Release Date: May 2000 - 3 - W83194BR-138 PRELIMINARY Revision 0.37 ...

Page 4

... Power supply for 3V_66 output, 3.3V. 11,18 Power supply for PCICLK, 3.3V. 2 Power supply for REF0, 3.3V. 30,38 Power supply for SDRAM_F,SDRAM[0:11], nominal 3.3V. Circuit Ground W83194BR-138 PRELIMINARY FUNCTION 2 C 2-wire control interface with internal 2 C 2-wire control interface with FUNCTION FUNCTION Publication Release Date: May 2000 Revision 0.37 ...

Page 5

... W83194BR-138 PRELIMINARY IOAPIC PCI(MHz) (MHz) 66.67 33.33 16.67 66.87 33.44 16.72 68.67 34.33 17.17 71.34 35.67 17.83 66.67 33.33 16.67 66.87 33.43 16.72 68.67 34.33 17.17 71.33 35.67 17.83 66.67 33.33 16.67 66.87 33.43 16.72 68.67 34.33 17.17 60 ...

Page 6

... Publication Release Date: May 2000 - 6 - W83194BR-138 PRELIMINARY IOAPIC PCI(MHz) (MHz) 66.67 33.33 16.67 66.87 33.44 16.72 68.67 34.33 17.17 71.34 35.67 17.83 66.67 33.33 16.67 66.87 33.43 16.72 68.67 34.33 17.17 71.33 35.67 17.83 66.67 33.33 16.67 66.87 33.43 16.72 68.67 34.33 17.17 60.00 30.00 15.00 66.67 33.33 16.67 66.87 33.43 16.72 68.67 34 ...

Page 7

... Publication Release Date: May 2000 - 7 - W83194BR-138 PRELIMINARY IOAPIC PCI(MHz) (MHz) 68.00 34.00 17.00 69.00 34.50 17.25 69.50 34.75 17.38 70.50 35.25 17.63 71.00 35.50 17.75 71.00 35.50 17.75 71.50 35.75 17.88 71.50 35.75 17.88 72.00 36.00 18.00 72.00 36.00 18.00 73.00 36.50 18.25 73.00 36.50 18.25 73.50 36.75 18.38 73.50 36.75 18.38 74.00 37 ...

Page 8

... Center type Spread Spectrum Modulation 0 = Down type Spread Spectrum Modulation Description SDRAM7 (Active / Inactive) SDRAM6 (Active / Inactive) SDRAM5 (Active / Inactive) SDRAM4 (Active / Inactive) SDRAM3 (Active / Inactive) SDRAM2 (Active / Inactive) SDRAM1 (Active / Inactive) SDRAM0 (Active / Inactive W83194BR-138 PRELIMINARY Bit (2, 7:4) 2 ...

Page 9

... CSkew1 (CPU to SDRAM skew program bit) CSkew0 (CPU to SDRAM skew program bit) CASkew2 (CPU to 3V66 skew program bit) CASkew1 (CPU to 3V66 skew program bit) CASkew0 (CPU to 3V66 skew program bit) CPUCLK1(Active / Inactive) CPUCLK0(Active / Inactive W83194BR-138 PRELIMINARY Publication Release Date: May 2000 Revision 0.37 ...

Page 10

... Winbond Version ID Winbond Version ID Winbond Version ID Winbond Version ID Ratio Bit 3 DS0 CPU SDRAM W83194BR-138 PRELIMINARY 3V66 Publication Release Date: May 2000 Revision 0.37 ...

Page 11

... JA BW 500 J 0.4 1.6 t TLH t THL V 0.7 1.5 over V 0.7 2.1 RBE - 11 - W83194BR-138 PRELIMINARY Rating - 0 7 150 125 + Units Test Conditions % Measured at 1. Load Measured at 1. Load Measured at 1. KHz Load on CPU and PCI ...

Page 12

... 100 DD 400 600 Fi 14.318 OUT 13.5 22.5 INX 3 Tra STA - 12 - W83194BR-138 PRELIMINARY = + Units Test Conditions @66M C = 0pF A L MHz Vdd=3. Logic Inputs pF Output pins capacitance pF X1 & X2 pins ...

Page 13

... W83194BR-138 8.0 HOW TO READ THE TOP MARKING W83194BR-138 28051234 814GAB 1st line: Winbond logo and the type number: W83194BR-138 2nd line: Tracking code 2 8051234 2: wafers manufactured in Winbond FAB 2 8051234: wafer production series lot number 3rd line: Tracking code 814 814: packages made in '98, week 14 G: assembly house ID ...

Page 14

... Winbond customers using or selling these products for use in such applications their own risk and agree to fully indemnify Winbond for any damages resulting from such improper use or sale. W83194BR-138 Winbond Electronics (H.K.) Ltd. Rm. 803, World Trade Square, Tower II 123 Hoi Bun Rd., Kwun Tong ...

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